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authorBoris Kolpackov <boris@codesynthesis.com>2015-06-24 16:57:46 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2015-06-26 14:33:11 +0200
commitccad54fefd2d8c980c61ae487dd3bcc9237a6137 (patch)
tree36566cb8e072c444cf8e344a5844800f7e177c86 /bpkg/manifest.cxx
parent5a5be442f4604b4634ed55a4d3980addcf60838f (diff)
Implement package version struct
Diffstat (limited to 'bpkg/manifest.cxx')
-rw-r--r--bpkg/manifest.cxx212
1 files changed, 182 insertions, 30 deletions
diff --git a/bpkg/manifest.cxx b/bpkg/manifest.cxx
index 6a09d53..149c743 100644
--- a/bpkg/manifest.cxx
+++ b/bpkg/manifest.cxx
@@ -4,12 +4,14 @@
#include <bpkg/manifest>
+#include <string>
#include <ostream>
#include <sstream>
#include <cassert>
#include <cstring> // strncmp()
#include <utility> // move()
#include <algorithm> // find()
+#include <stdexcept> // invalid_argument
#include <bpkg/manifest-parser>
#include <bpkg/manifest-serializer>
@@ -35,6 +37,18 @@ namespace bpkg
return c == ' ' || c == '\t';
}
+ inline static bool
+ digit (char c)
+ {
+ return c >= '0' && c <= '9';
+ }
+
+ inline static bool
+ alpha (char c)
+ {
+ return c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z';
+ }
+
static ostream&
operator<< (ostream& o, const dependency& d)
{
@@ -45,7 +59,7 @@ namespace bpkg
static const char* operations[] = {"==", "<", ">", "<=", ">="};
o << " " << operations[static_cast<size_t> (d.version->operation)]
- << " " << d.version->value;
+ << " " << d.version->value.string ();
}
return o;
@@ -53,7 +67,7 @@ namespace bpkg
// Resize v up to ';', return what goes after ';'.
//
- static string
+ inline static string
add_comment (const string& v, const string& c)
{
return c.empty () ? v : (v + "; " + c);
@@ -66,7 +80,7 @@ namespace bpkg
iterator b (v.begin ());
iterator i (b);
- iterator ve (b); // End of value
+ iterator ve (b); // End of value.
iterator e (v.end ());
// Find end of value (ve).
@@ -84,12 +98,12 @@ namespace bpkg
for (++i; i != e && space (*i); ++i);
}
- string c(i, e);
+ string c (i, e);
v.resize (ve - b);
return c;
}
- template<typename T>
+ template <typename T>
static string
concatenate (const T& s, const char* delim = ", ")
{
@@ -142,8 +156,10 @@ namespace bpkg
iterator e (pos_); // End of list item.
for (char c; i != end_ && (c = *i) != delim_; ++i)
+ {
if (!space (c))
e = i + 1;
+ }
if (e - pos_ > 0)
r.assign (pos_, e);
@@ -154,6 +170,141 @@ namespace bpkg
return r;
}
+ // version
+ //
+ version::
+ version (const char* v): version () // Delegate
+ {
+ using std::string; // Otherwise compiler get confused with string() member.
+
+ assert (v != nullptr);
+
+ auto bad_arg ([](const string& d) {throw invalid_argument (d);});
+
+ auto uint16 (
+ [&bad_arg](const string& s, const char* what) -> uint16_t
+ {
+ unsigned long long v (stoull (s));
+
+ if (v > UINT16_MAX) // From <cstdint>.
+ bad_arg (string (what) + " should be 2-byte unsigned integer");
+
+ return static_cast<uint16_t> (v);
+ });
+
+ auto add_canonical_component (
+ [this, &bad_arg](const char* b, const char* e, bool numeric) -> bool
+ {
+ if (!canonical_.empty ())
+ canonical_.append (1, '.');
+
+ if (numeric)
+ {
+ if (e - b > 8)
+ bad_arg ("8 digits maximum allowed in a component");
+
+ canonical_.append (8 - (e - b), '0'); // Add padding spaces.
+
+ string c (b, e);
+ canonical_.append (c);
+ return stoul (c) != 0;
+ }
+ else
+ {
+ // Don't use tolower to keep things locale independent.
+ //
+ static unsigned char shift ('a' - 'A');
+
+ for (const char* i (b); i != e; ++i)
+ {
+ char c (*i);
+ canonical_.append (1, c >= 'A' && c <='Z' ? c + shift : c);
+ }
+
+ return true;
+ }
+ });
+
+ enum {epoch, upstream, revision} mode (epoch);
+
+ const char* cb (v); // Begin of a component.
+ const char* ub (v); // Begin of upstream component.
+ const char* ue (v); // End of upstream component.
+ const char* lnn (v - 1); // Last non numeric char.
+
+ // Length of upstream version canonical representation without trailing
+ // digit-only zero components.
+ //
+ size_t cl (0);
+
+ const char* p (v);
+ for (char c; (c = *p) != '\0'; ++p)
+ {
+ switch (c)
+ {
+ case '+':
+ {
+ if (mode != epoch || p == v)
+ bad_arg ("unexpected '+' character position");
+
+ if (lnn >= cb) // Contains non-digits.
+ bad_arg ("epoch should be 2-byte unsigned integer");
+
+ epoch_ = uint16 (string (cb, p), "epoch");
+ mode = upstream;
+ cb = p + 1;
+ ub = cb;
+ break;
+ }
+
+ case '-':
+ case '.':
+ {
+ if (mode != epoch && mode != upstream || p == cb)
+ bad_arg (string ("unexpected '") + c + "' character position");
+
+ if (add_canonical_component (cb, p, lnn < cb))
+ cl = canonical_.size ();
+
+ ue = p;
+ mode = c == '-' ? revision : upstream;
+ cb = p + 1;
+ break;
+ }
+ default:
+ {
+ if (!digit (c) && !alpha (c))
+ bad_arg ("alpha-numeric characters expected in a component");
+ }
+ }
+
+ if (!digit (c))
+ lnn = p;
+ }
+
+ if (p == cb)
+ bad_arg ("unexpected end");
+
+ if (mode == revision)
+ {
+ if (lnn >= cb) // Contains non-digits.
+ bad_arg ("revision should be 2-byte unsigned integer");
+
+ revision_ = uint16 (cb, "revision");
+ }
+ else
+ {
+ if (add_canonical_component (cb, p, lnn < cb))
+ cl = canonical_.size ();
+
+ ue = p;
+ }
+
+ assert (ub != ue); // Can't happen if through all previous checks.
+ upstream_.assign (ub, ue);
+ canonical_.resize (cl);
+ }
+
// package_manifest
//
package_manifest::
@@ -205,14 +356,14 @@ namespace bpkg
if (!version.empty ())
bad_name ("package version redefinition");
- // Think about using class other then string which does value
- // verification, proper collation and maybe provides normalized
- // representation.
- //
- if (v.empty ())
- bad_value ("empty package version");
-
- version = move (v);
+ try
+ {
+ version = version_type (move (v));
+ }
+ catch (const invalid_argument& e)
+ {
+ bad_value (string ("invalid package version: ") + e.what ());
+ }
}
else if (n == "summary")
{
@@ -362,9 +513,7 @@ namespace bpkg
list_parser lp (v.begin (), v.end ());
for (string lv (lp.next ()); !lv.empty (); lv = lp.next ())
- {
l.push_back (move (lv));
- }
if (l.empty ())
bad_value ("empty package license specification");
@@ -386,9 +535,7 @@ namespace bpkg
list_parser lp (b, e, '|');
for (string lv (lp.next ()); !lv.empty (); lv = lp.next ())
- {
ra.push_back (lv);
- }
if (ra.empty () && ra.comment.empty ())
bad_value ("empty package requirement specification");
@@ -415,21 +562,26 @@ namespace bpkg
iterator b (lv.begin ());
iterator i (b);
- iterator ne (b); // End of name
+ iterator ne (b); // End of name.
iterator e (lv.end ());
// Find end of name (ne).
//
for (char c; i != e && (c = *i) != '=' && c != '<' && c != '>'; ++i)
+ {
if (!space (c))
ne = i + 1;
+ }
if (i == e)
- {
da.push_back (dependency {lv});
- }
else
{
+ string nm (b, ne);
+
+ if (nm.empty ())
+ bad_value ("prerequisite package name not specified");
+
// Got to version comparison.
//
const char* op (&*i);
@@ -468,19 +620,19 @@ namespace bpkg
if (pos == string::npos)
bad_value ("no prerequisite package version specified");
- // Still need to implement version verification.
- //
- dependency d
- {
- string (b, ne),
- version_comparison {lv.c_str () + pos, operation}
- };
+ version_type v;
- if (d.name.empty ())
+ try
{
- bad_value ("prerequisite package name not specified");
+ v = version_type (lv.c_str () + pos);
+ }
+ catch (const invalid_argument& e)
+ {
+ bad_value (
+ string ("invalid prerequisite package version: ") + e.what ());
}
+ dependency d{move (nm), version_comparison {move (v), operation}};
da.push_back (move (d));
}
}
@@ -515,7 +667,7 @@ namespace bpkg
{
s.next ("", "1"); // Start of manifest.
s.next ("name", name);
- s.next ("version", version);
+ s.next ("version", version.string ());
if (priority)
{